FR2001090A1 - - Google Patents

Info

Publication number
FR2001090A1
FR2001090A1 FR6901434A FR6901434A FR2001090A1 FR 2001090 A1 FR2001090 A1 FR 2001090A1 FR 6901434 A FR6901434 A FR 6901434A FR 6901434 A FR6901434 A FR 6901434A FR 2001090 A1 FR2001090 A1 FR 2001090A1
Authority
FR
France
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
FR6901434A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Politechnika Slaska im Wincentego Pstrowskiego
Original Assignee
Politechnika Slaska im Wincentego Pstrowskiego
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from PL12501368A external-priority patent/PL69743B1/xx
Priority claimed from PL12501568A external-priority patent/PL69744B1/xx
Priority claimed from PL13020568A external-priority patent/PL69740B1/xx
Application filed by Politechnika Slaska im Wincentego Pstrowskiego filed Critical Politechnika Slaska im Wincentego Pstrowskiego
Publication of FR2001090A1 publication Critical patent/FR2001090A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D307/00Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/02Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
    • C07D307/34Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D307/56Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D307/62Three oxygen atoms, e.g. ascorbic acid

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Furan Compounds (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
FR6901434A 1968-02-01 1969-01-24 Withdrawn FR2001090A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
PL12501368A PL69743B1 (en) 1968-02-01 1968-02-01
PL12501568A PL69744B1 (en) 1968-02-01 1968-02-01
PL13020568A PL69740B1 (en) 1968-11-23 1968-11-23

Publications (1)

Publication Number Publication Date
FR2001090A1 true FR2001090A1 (en) 1969-09-26

Family

ID=27354018

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6901434A Withdrawn FR2001090A1 (en) 1968-02-01 1969-01-24

Country Status (10)

Country Link
JP (1) JPS4830273B1 (en)
AT (1) AT308290B (en)
CH (1) CH490368A (en)
CS (1) CS169787B2 (en)
DE (1) DE1904619C3 (en)
DK (1) DK131467C (en)
ES (1) ES363151A1 (en)
FR (1) FR2001090A1 (en)
GB (1) GB1222322A (en)
SE (1) SE363322B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58177986A (en) * 1982-04-09 1983-10-18 Shionogi & Co Ltd Production of l-ascorbic acid
ES2061395B1 (en) * 1993-02-09 1995-12-16 Velasco Clemente Jesus Sanchez ADDITIONAL INJECTION CARBURETTOR AIR VARIABLE AND FUEL, CONTROLLED THROUGH DIFFERENTIAL PISTON FIXED TO SLIDING WITH DIRECT LINEAR MOVEMENT.
DE19938980A1 (en) 1999-08-19 2001-02-22 Basf Ag Process for the preparation of 2-keto-L-gulonic acid esters
DE19954511A1 (en) * 1999-11-12 2001-05-17 Basf Ag Process for the preparation of alkali salts of L-ascorbic acid
DE10022518A1 (en) 2000-05-10 2001-11-15 Basf Ag Preparation of L-ascorbic acids by reacting 2-keto-L-gulonic acids or melt of 2-keto-L-gulonic acid alkyl esters under acid catalysis using water-miscible solvent(s)
MXPA03005640A (en) * 2000-12-22 2003-10-06 Eastman Chem Co Continuous process for producing l-ascorbic acid.
EP1368329B1 (en) 2000-12-22 2005-08-31 Eastman Chemical Company Process for producing ascorbic acid in the presence of a sulfit
US6740762B2 (en) 2001-08-24 2004-05-25 Eastman Chemical Company Process for ascorbic acids using alkaline earth silicate catalysts
US6716997B1 (en) 2001-10-09 2004-04-06 Eastman Chemical Company Systems and methods for generation of ascorbic acid with reduced color
DE10231890B4 (en) 2002-07-12 2004-07-01 Basf Ag Process for the separation of ascorbic acid from a polar solvent containing ascorbic acid and 2-keto-L-gulonic acid

Also Published As

Publication number Publication date
ES363151A1 (en) 1970-11-16
DE1904619A1 (en) 1970-08-27
DK131467B (en) 1975-07-21
GB1222322A (en) 1971-02-10
CH490368A (en) 1970-05-15
DE1904619C3 (en) 1975-06-12
DE1904619B2 (en) 1974-10-31
JPS4830273B1 (en) 1973-09-18
CS169787B2 (en) 1976-07-29
AT308290B (en) 1973-06-25
SE363322B (en) 1974-01-14
DK131467C (en) 1976-02-09

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Legal Events

Date Code Title Description
ST Notification of lapse